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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $106,975,000 | $105,974,877 | $180,374,372 | $211,223,855 | $96,860,239 | $185,545,788 | $239,969,934 |
| Articles of iron or steel | $42,857,000 | $52,493,369 | $75,917,667 | $101,832,669 | $74,373,670 | $63,502,222 | $62,443,734 |
| Copper and articles thereof | $43,871,000 | $61,516,669 | $103,414,482 | $88,315,604 | $50,645,983 | $102,254,134 | $104,392,080 |
| Nickel and articles thereof | $7,000 | $77,410 | $13,873 | $13,886 | $40,438 | $1,401 | $53,510 |
| Aluminum and articles thereof | $55,583,000 | $67,462,447 | $78,839,222 | $78,984,489 | $49,384,477 | $62,637,086 | $62,518,767 |
| Lead and articles thereof | $10,166,000 | $13,355,877 | $30,743,993 | $20,890,114 | $17,060,588 | $23,736,350 | $23,977,323 |
| Zinc and articles thereof | $133,000 | $1,179,344 | $765,327 | $147,946 | $196,841 | $674,586 | $678,410 |
| Tin and articles thereof | $2,000 | $2,025 | | $254 | $18,057 | $22,602 | $208 |
| Other base metals; cermets; articles thereof | $7,000 | $6,554 | $62,279 | $158,024 | $8,621 | $24,283 | $12,272 |
| Tools, implements, cutlery, spoons and forks, of base metal | $3,393,000 | $3,747,035 | $5,156,616 | $6,096,672 | $5,212,476 | $4,047,118 | $4,108,486 |
| Miscellaneous articles of base metal | $6,117,000 | $9,064,750 | $9,714,737 | $11,322,071 | $9,438,247 | $7,673,151 | $12,449,817 |
| Total | $269,111,000 | $314,880,357 | $485,002,568 | $518,985,584 | $303,239,637 | $450,118,721 | $510,604,541 |
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